If you work with Unix files and folders a lot, you’ve probably already noticed that you can’t see many of them in the Finder—the /usr, /bin, and /etc folders, amongst many others, don’t show up in the ...

While the average Unix user is generally satisfied by the date/time stamps that he sees when using the ls -l command, it is sometimes useful to remember that there are actually several time stamps ...

People who have had bad experiences on Windows disks that performed poorly after they had become very fragmented often wonder if they need to apply some kind of periodic analysis and defragmentation ...

There are many ways to move files between Unix and Windows. In my mind, they fall into three categories — secure copy (let’s not even think about ftp), shared drives, and file synchronization. Each ...

November 28, 2012 Add as a preferred source on Google Add as a preferred source on Google You are not alone. In fact, I was pretty confused by file permissions for a long time, but it’s actually very ...

There are four ways to specify that a file is in UNIX System Services when you use the FILENAME statement or FILENAME function: You can also use these specifications in combination. For example, you ...

Head and tail are great commands when you want to look only at the beginning or the ending of files. Getting a feel for how the lines in a file are changing over time, on the other hand, can take a ...